The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Facade Sealing contractors in Purley

Need facade sealing in Purley? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.

  • Failed sealant on precast panel joints
  • Perimeter joints where frames meet the structure
  • Hard, chalky sealant that no longer flexes
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Facade sealing near Purley

Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.

Different surfaces, different methods

Brick and stone facades

Stone can absorb plasticisers from the wrong sealant. The specified stone-compatible sealant is what we use.

Window and door perimeters

Aluminium, PVC-U and timber frames each have their own preparation needs. Primer goes on where the manufacturer specifies it for that substrate.

Facade sealing in Purley, done properly

Our facade sealing work covers external facade joints, window and door perimeters, cladding panel joints and the perimeter joints where frames meet the structure. Where sealant is the specified fix, we also take on coping and flashing joints. Site teams most often ask us about cold air coming in at window perimeters and cladding panel joints that have opened up, across window and door perimeters, stone and brick facade joints and cladding panel joints. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Purley, preparation and product choice get the time they need.

A great deal of London construction is refurbishment of occupied or part-occupied buildings, alongside new blocks. New frames, overcladding and fit-outs all end in perimeter and facade joints, frequently with occupants close by.

The 12-month guarantee is for workmanship rather than wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we’re clear about what is covered before work starts.

Location
Purley (CR8, CR2, CR5)
Wider area
Greater London
Cover
12 months on every job
Price
A fixed quote before we start
Call
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

From enquiry to sign-off

Diagnose, treat, sign off: every visit follows that pattern. We inspect the joints and confirm what’s in scope, then the work is carried out to the specified product and detail, and the job ends with a walk round and sign-off. All of Greater London is in the ULEZ, and kerbside space in Purley can be scarce. Let us know about any on-site parking or loading arrangements when you send the job details.

  1. Photos, drawings or a visit tell us about the joints and the access.
  2. Product choice follows the joint’s movement and substrate.
  3. The existing bead comes out in full.
  4. Primer is applied where the maker specifies it.
  5. Backing rod is fitted and the new sealant gunned in and tooled.
  6. The finished joints are checked with you.

Getting the site ready

  • Send your site hours and access windows
  • Confirm the product named in the specification
  • Point out any areas we must not close

Getting a fixed quote

Quotes are fixed against the scope you send, so the cost is agreed before work starts. To start the process, speak to us on 01277 525 020 or send details through our quote form.

Ask for a quote

Related advice

Signs you need facade sealing in Purley

Sometimes the substrate is the problem: crumbling render, spalling concrete or flaking paint take the sealant with them. When the joint edges need repair first, we say so.

Any of the following is a good reason to get the joints checked over:

  • Previous reseals run over old sealant
  • Weathered joints at frame-to-structure perimeters
  • Facade joints cracked through the middle
  • Staining on stone next to old sealant

Hotel extensions and refits, at places such as London Croydon Aerodrome Hotel, 1.5 miles to the north of Purley, usually run between busy periods, so the sealing is squeezed into short windows.

Questions to ask before you book

  • Proof of insurance
  • How they handle RAMS and site documents
  • Will CSCS-carded applicators be on site?
  • Their pre-qualification and accreditations

How to choose a sealant contractor

New build and refits around Purley

A number of hotels sit less than 2 miles from Purley. Hotel schemes tend to have fixed reopening dates, so the mastic is programmed tightly with the other trades. Every borough of Greater London is inside the ULEZ, and that applies to contractors’ vehicles on any job in Purley. Add booked deliveries and tight storage, and the mastic package needs planning with the site team.

When a school such as Christ Church CofE Primary School (Purley) is extended or refurbished, the mastic package is often squeezed into the holidays. Recladding or extending a unit at a site like Ullswater Industrial Estate (1.4 miles south-west of Purley) brings panel joints and frame perimeters into the programme.

Purley is about 2 miles south-west of Croydon, in Greater London. If you’re looking for facade sealing in Purley, we can help. 764 places across Greater London fall within our area, including Purley. London is covered too, some 11 miles away.

Commercial sites across CR8, CR2 and CR5 are covered. Buildings on High Street, Church Road and Brighton Road are within our area for facade joints. Purley sits on or close to the A2022. Close to Purley, our area also takes in Peaks Hill (1 mile north-west), Woodcote (1 mile west), Russell Hill (1 mile north), Roundshaw (1 mile north-west) and Woodcote Green (1 mile west). A short drive away, we cover London (11 miles north), City of Westminster (12 miles north), Marylebone (13 miles north), Kensington (12 miles north), St Pancras (13 miles north) and Shoreditch (13 miles north).

What’s near Purley

Locally, jobs take us to sites close to The Jolly Farmers pub, Laleham Lea School and Thomas More Catholic School, among other places. Purley has its own railway station: Purley station. Nearby you’ll also find Purley War Memorial Hospital (less than half a mile north-east) and St George's Walk (2.7 miles north). Green spaces nearby include Duppas Hill and Foxley Wood.

Map of Purley © OpenStreetMap contributors

Why act early in Purley

The longer a failed joint is left, the more the substrate suffers: edges get wet, render and timber deteriorate and frames can move. Early action keeps it simple. Failed sealant in a building in Purley can quickly affect neighbours, tenants or the floor below: water travels through shared structures, and a small leak becomes a dispute between occupiers. Putting it right early is less disruptive than dealing with the consequences.

The price depends on the quantity of joints, what has to come out first and the access. Call for a quote when you are ready.

What you get with us

  • Fully insured
  • Over 20 years of commercial sealing
  • Clear, fixed quotes
  • CSCS-carded applicators

See what affects the cost and our accreditations and insurance.

For managing agents and facilities managers

We work for building owners and managing agents on everything from one building to a spread of sites around Purley. Several sites can go on one quote, so there’s one set of paperwork to deal with.

FMs need a contractor who is easy to get on site. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.

FAQs: Purley

Can you work at a site such as Ullswater Industrial Estate, by Purley?

Yes. Estates, retail parks and business parks around Purley, Ullswater Industrial Estate among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.

Could you schedule work at a campus like Purley Language College for the vacation?

Yes. We plan campus work around teaching, exams and residence turnarounds. Tell us which site documents you need, such as RAMS, our insurance certificate or CSCS details, and they’re confirmed with the quote.

Are your applicators CSCS-carded?

Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.

Is it okay to overlay old mastic?

No. New sealant won’t hold on old sealant, so the old bead is cut away. Nothing else gives a bond that lasts.

Can you work in cold or wet weather?

Year-round work is possible as long as joints are dry and temperatures suit the product. Frost and condensation on glass and steel are common on winter mornings, so we plan around the forecast.

How is access to upper-level joints handled?

Access is planned with you before we quote. Let us know what access is in place or planned, and we will price the work around it.

Does weather matter for sealant work?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.

Cost factors for facade joints

Before we quote, we look at:

  • Whether old sealant has to be cut out first
  • The size and state of each joint
  • Location, for remote and island sites
  • The total length or number of joints

Pricing facade joints depends on quantities, condition and access, and any specification that applies. Ask us for a fixed quote.

Sending details for a quote

Diagnosis starts before we arrive. Tell us:

  • The type of building and who uses it
  • A wide shot and a close-up of the area
  • Asbestos survey details if the building is older
  • Any dates the work must fit around

Need a figure for a tender or a budget? We’ll quote against your scope and drawings that you can work with. For a chat about it beforehand, ring 01277 525 020 or use the quote form.

Accreditations

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